Drill hole measuring device and rock drilling unit
US7654317B2 · kind B2 · utility
3Cited by
9References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 8, 2004 |
| Grant date | Feb 2, 2010 |
| Priority date | — |
| Expiry date | Apr 9, 2025 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/022
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A drill hole measuring device and a rock drilling unit equipped with the measuring device. The measuring device (1) comprises a protective element (3), inside which a sensor (6) can be transferred by means of a transfer device (4).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.